#! /bin/sh

yes_or_no()
{
	echo "Is your name $* ?"
	while true
	do
		echo -n "Enter yes or no: "
		read x
		case "$x" in 
			y | yes ) return 0;;
			n | no  ) return 1;;
			* ) echo "Answer yes or no"
		esac
	done
}

echo "Original parameters are $*"

if yes_or_no "$1"
then
	echo "Hi $1, nice meet"
else
	echo "Never mind"
fi

exit 0
